The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
Mar. 21, 2006
Koichi Miwa, Yokohama, JP;
Koichi Miwa, Yokohama, JP;
Global OLED Technology LLC, Herndon, VA (US);
Abstract
A drive circuit that compensates for the dispersion of the characteristics of drive transistors is disclosed. A switch SWis turned off, and switches SWand SWare turned on. Thereby, a constant current from a constant current source CCis flown in a drive transistor T. Consequently, a gate voltage corresponding to the constant current Is written in the gate of the drive transistor T. Then, the switches SWand SWare turned off, and the switch SWis turned on. Simultaneously, the voltage of a capacitor Con the side of the switch SWis varied according to a signal voltage, and thereby the voltage is added to the gate of the drive transistor Tto flow a current corresponding to the signal voltage in the drive transistor T